Discrete Dipole Approximation Applied to Highly Directive Slotted Waveguide Antennas

We present an analysis of a slotted waveguide antenna (SWA) whose directivity has been enhanced by using metamaterial parasitic elements. We apply an adapted form of the discrete dipole approximation (DDA) as a modeling tool and verify the accuracy and versatility of this method for different config...

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Bibliographic Details
Published inIEEE antennas and wireless propagation letters Vol. 15; pp. 1823 - 1826
Main Authors Pulido-Mancera, Laura M., Zvolensky, Tomas, Imani, Mohammadreza F., Bowen, Patrick T., Valayil, Minu, Smith, David R.
Format Journal Article
LanguageEnglish
Published New York IEEE 2016
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Apertures
Approximation
Computational modeling
Dipole antennas
Dipoles
Directivity
Discrete dipole approximation
Mathematical analysis
metamaterial antennas
Metamaterials
Optical waveguides
parasitic elements
Parasitic elements (antennas)
Radiators
Rectangular waveguides
Slot antennas
slotted waveguide antennas
Waveguide antennas
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Summary:We present an analysis of a slotted waveguide antenna (SWA) whose directivity has been enhanced by using metamaterial parasitic elements. We apply an adapted form of the discrete dipole approximation (DDA) as a modeling tool and verify the accuracy and versatility of this method for different configurations, including matched and shorted SWAs, and with and without parasitic elements. The results presented in this letter demonstrate the capabilities of the DDA for the fast and accurate simulation of aperture antennas composed of small radiators, and its further application for the design of complex metamaterial structures.
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2016.2538202